Kate shared, "There were so many people. Everyone from the set rushed in and I just sat there for a minute, which really scared (SI editor) MJ. Looking at the video now, I really see how scary it was because I just laid there not moving. But I was like, 'Oh, my God, guys, I didn't die.’ But I just laid there for a second, but Darcy ran in and held my hand as the undertow came in and then MJ barreled in there like mama bear.”